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(No Model.) v

J. W. 81; A. B. LAWLER. DRAFT EQUALIZER.

Patented Dec. 12, 1882.

N. PETERS. PhulwLiihcgnpbor, Wilhmglon, D. C.

UNITED STATES PATENT OFFICE.

JAMES W. LAWLEH, AND ALBERT B. LAWLER, OF FREDERIOKSVILLE, ILL.

DRAFT-EQUALIZER.

SPECIFICATION forming part of Letters Patent No. 268,912, dated December12, 1882.

Application filed August 14, 1882. (No model.)

To all whom it may concern:

Be it known that we, JAMES W. LAWLER. and ALBERT B. LAWLER, citizens ofthe United States, residing at Fredericksville, in the county ofSchuyler and State of Illinois, have invented certain new and usefulImprovements in Draft-Equalizers; and we do declare the following to bea full, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and usethe same, reference beizer constructed according to my invention.

Similar letters represent similar parts in both figures.

A represents the vehiclepole. lt may be connected to a wagon, car,harvesting-machine, or other vehicle, as is desired.

a to represent two bars, having their inner ends lapping each other, andpivoted on the bolt M, by which they are both secured to the pole ortongue A, These bars are extended on either side of the tongue A.

g b b are single-trees pivoted on the bars a a, near the outer ends ofthe latter, as shown. The bars a a. swing freely back and forth on theirpivotal bolt M, as indicated in dotted lines.

0 represents a lever-bar arranged some distance in rear of the pivotalhole a, and pivoted on bolt 0 on the tongue, with one portion, 0, aboutone-third its length, projected to the left, and the remaining portionor arm, 0, about two-thirds its length,projected to the right, as shown.

at represents a pulley journaled in clip d, secured near the outer endofportion c of bar 0.

0 represents a chain passed around pulley d, and having its ends madefast to bars eta midway between the pivotal bolt 0. and the point wherethe single-trees are secured thereon, as shown. I

f represents a bar arranged between the lever-bar c and the bars a a,and having one of 5 its ends pivoted on bolt f to the tongue A and itsopposite end projected to the right beyond the end of the single-tree bon bar a, as shown.

f represents a single-tree pivoted in clip f secured near the outer endof the bar f.

g represents a chain, having one of its ends made fast to the bar 0,near the outer end of the latter, and its opposite end secured to thebar f about midway between the pivotal bolt f and the clip f trepresents a bar or strap, having one end made fast to the tongue infront of the bars a a, and having its other end extended up above thebars at a, and provided with a bolt hole, through which the bolt a ispassed, bracing the bolt a as shown. i

t" represents a flat bar or plate, having its rear end fixed on bolt fand its forward end fixed on bolt a and arranged between the bars eta,as shown in Fig. 2,whereby"the bolts f and a are connected and bracedand the friction of the bars a. a one against the other is prevented.

'6 represents a brace plate or strap, having one end secured to thetongueA in rear of the bar 0 and its other end carried up over the bar0, and provided with a bolt-hole, through which the bolt 0 is passed.

In the operation of our invention one horse 8 is connected to each ofthe single-trees b, b, and f. The bars a a, to which the singletrees b bare secured, are preferably secured and turn on the same bolt. It willbe under stood, however, these-bars may be pivoted on separate bolts,and the result obtained may be equally as good. The horses attached tothe single-trees b and b are arranged next and on opposite sides of thepole, and by reason of the chain 6 being passed around pulley d theywork in opposition to each other. It will also be seen the pull of thetwo horses hitched to trees I) and b is exerted on the short arm 0 ofbar 0, and the bar 0, by its long arm 0 being the point of applicationof the draft of horse attached to bar f, the draft of the three horsesis equalized, and when they are pulling with equal force the bars a, a,c, and f will stand in the position shown in full lines, Fig. 1, atright angles to the pole A. it will be seen that by removing the bars 0and f and placing the pulley d, carrying the chain 0, on

the bolt 0 the equalizer is readily changed from a three to a two horseequalizer. By ar-i ranging the two horses next the pole to pull directlyagainst each other better results are obtained,espeoially in turningcorners, and by the arrangement described, wherebythe two horses nextthe pole are balanced with the third horse, the difliculty of side draftis overcome, making the device especially. useful on self-bindingharvesters in which one horse moves close to the grain-row, and it is ofgreat importance to have a direct forward movement of the machine.

It will be understood that instead of connecting the single-trees to thebars a a, as described, the said bars may be provided with hooks orother means whereby the horses may be attached.

Having thus described our invention, what we claim, and desire to secureby Letters Patent, is-

The combination,with thedouble-tree and the lever f, of the double lever0, having its longer arm,c arranged in rear of the lever f, theanti-friction roller 61, journaled on the end of the shorter arm of thelever c, the chain 9, coupled to the longer arm of lever c and to thelever f, and the equalizing-chain 0, having one of its ends made fast toone end of the doubletree and its other end carried around the antifriction roller d and made fast to the opposite end of said double-tree,substantially as set forth.-

In testimony whereof we afiix our signatures in presence of twowitnesses.

JAMES W. LAWLER] ALBERT B. LAWLER.

Witnesses:

JOHN C. BAGBY,

S. B. lVIONTGOMERY.

